Power components for battery applications webinar presentation
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These slides, from Vicor's Power Components for Battery Applications webinar explain: - Applications that benefit from using batteries - Trends in battery-powered systems - Battery-specific power design challenges - The importance of wide input and output voltage ranges - What to look for when choosing a regulator for a battery system
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Power components for battery applications webinar presentation
- 1. 1 Power Components for Battery Applications Presented by: Travis Williams Senior Manager, Product Management and Marketing
- 2. 2 Agenda 1. Battery Powered Systems – Applications and trends 2. Regulating Batteries – Battery specific challenges – Universal challenges 3. Choosing a DC-DC Regulator – What to look for 4. Vicor Solutions and Benefits
- 3. 3 Battery Powered Systems › Automotive Hybrid Battery Voltages and Technologies – Start/stop enabled mild/micro hybrids – 48V rails the future of automotive electronics?
- 4. 4 Battery Powered Automotive Accessories › Automotive Hybrid Battery Voltages and Technologies – Increased power demands from additional electronics › Video surveillance, portable wireless, infotainment, active chassis systems
- 5. 5 Grid Independent Homes and Distributed Generation › Alternative ‘Green’ Power Generation – Solar and wind powered homes – Distributed generation Source: www.microgrids.et.aau.dk
- 6. 6 Industrial & Portable Equipment Battery Back-Up › Solar Powered Road Signs › Portable Medical Equipment › Industrial Battery Chargers
- 7. 7 Regulating Battery Supplies – Power Out › Wide Operating Voltage Ranges – Example: traditional 12V lead acid battery › Typically applications 8V<= Vbat <= 16.5V http://www.scubaengineer.com/documents/lead_acid_battery_charging_graphs.pdf
- 8. 8 Charging Batteries – Power In › Constant-Current / Constant-Voltage Curve
- 9. 9 Battery Specific Challenges › Load Regulation and Charging – Switching between Voltage Priority & Current Priority – Many systems use dedicated battery charging components and DC-DC regulators › Harsh Environments – Indoors, outdoors, wide temperature ranges -40C to +125C › Thermal Management – High ambient temps, little to no cooling mechanisms – No room for a heat sink & no active cooling
- 10. 10 Regulating Automotive Batteries – Special Case › Automotive Alternators Bring an Extra Challenge
- 11. 11 Universal Challenges Make it Smaller, Lighter, and with More Power! http://www.edn.com/electronics-blogs/scope-guru-on-signal-integrity/4403881/Automotive-electronics-systems--trends-and-impact-for-test-and-measurement-companies-
- 12. 12 What to Look for in a Solution › Wide Input/Output Operating Range – One solution that supports 12V, 24V, 36V, 48V batteries – Maintain regulation over entire input range 60V48V36V24V12V 12V 24V 36V Li Ion 48V Li Ion
- 13. 13 What to Look for in a Solution › Support for Both Voltage Priority & Current Priority Operation – Charging mode = constant-current priority – Regulation mode = DC-DC Buck-Boost voltage priority – Dual mode solution to replace a separate DC-DC regulator and battery charger CC Mode CV Mode Dual Mode DC-DC
- 14. 14 What to Look for in a Solution › High Efficiency – Higher efficiency less heat = more power/ PCB area – Uniform efficiency performance over a wide VIN range
- 15. 15 What to Look for in a Solution › Small Size, Lightweight, Power Dense & Modular – High switching frequency smaller power components – Lightweight solutions – System-in-Package solution facilitate a modular design approach
- 16. 16 What to Look for in a Solution › Scalability – Modular solutions which are easily paralleled – Automatic current sharing DC-DC DC-DC DC-DC Load
- 17. 17 Vicor’s Solution and Benefits › PI374x Family of Buck-Boost Regulators – PI3740, PI3741, PI3749 › Lower Cost of Ownership – System-in-package modular design › Reuse and scalability – Thermal and power design margin – Simplified BOM – Faster design time – Pre-compensated and optimized › First pass design success!
- 18. 18 Products and Tools › Vicor provides AC-DC, High Voltage DC-DC, and DC to PoL Solutions –Select BCM and VTMs support bi-directional operation –http://www.vicorpower.com/powerbench
- 19. 19 Thank you
- 20. 20 IEEE PDH Information › Webinar title: Power Components for Battery Applications › Code: 2017IEEE04S14 › Link for form: https://fs25.formsite.com/ieeevcep/form112/index.html
Editor's Notes
- The market for new vehicle and aftermarket Start-Stop batteries is expected to rise to 56 million worldwide by 2020, compared to 22 million today, according to automotive battery manufacturer, Johnson Controls. In this time frame, 85 percent of all new vehicles in Europe and 40 percent in the U.S. and China are expected to be powered with Start-Stop batteries. https://www.ecnmag.com/blog/2015/11/3-battery-trends-evolving-industry This application includes multiple operation modes including; AC/DC, DC/DC (two directions), Battery Charging (CC/CV)
- Automotive Accessories come built in from the manufacturer or can added later as aftermarket products. The one common denominator is that these systems are all powered by batteries and they need to have a stable DC supply
- Small scale generation is enabling distributed grid infrastructure with the potential to make the entire system more robust. At each and every distributed generation point there is a need for Conversion and Regulation Onsite home energy storage can enable grid independence and the need for a host of DC/DC regulation opportunities. Charging electric vehicles Home appliances Vehicles and equipment
- Battery back up systems for Wayside Train controls and Medical Equipment are a few examples. Higher power applications like the industrial battery charger shown can also be available.
- Battery voltages vary with State of Charge, Age, Temperature and Charge/Discharge Current During Cold Crank Automotive batteries can go as low as 6V however for accessory application only need to support down to 8V. Common battery voltages: 12V, 24V, 36V, 48V Factoring in max charge voltage 48V Li Ion batteries can approach 60V under charge at 100% SOC.
- Battery must be recharged so the system solution must not only regulate but also support charging Harsh Environments Automotive Cabins, Trunks, Heat and Vibration Outdoor equipment like wayside train controls, road side signage No forced air or other cooling options available in many of these environments means the system design needs to design for thermal
- This waveform shows a net result of a clamped load dump transient. For 12V battery systems they must be clamped at 40V https://en.wikipedia.org/wiki/Load_dump For 24V battery systems they must be clamped at 60V https://en.wikipedia.org/wiki/Load_dump 48V Li Ion batteries are not charged directly from the battery and do not see the load dump
- Power supply designers must fit more power in a smaller space to support: More electronics, more load Communications/entertainment systems Lighting Engine Management & Fuel optimization Lane monitoring Stability control Active Noise Navigation, video recording Smaller space, less room for power Fuel Economy Targets have been increasing driving need for lighter weight
- With its wide input range the PI3740 can be used to regulate or charge 12,24,36,48V Batteries.
- High efficiency over a wide input range allows for uniform Buck Boost performance across a wide input range to a fixed POL voltage.
- Vicor BB solution uses a fraction of the PCB area as compared to a older discrete controller based solution. This helps address need for more power in smaller spaces Lightweight solutions support higher vehicle fuel efficiency and enable other applications like, UAVs, outdoor signage.
- Easily paralleled solutions allow for quick scaling of power component to support increasing loads.